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2020-10-22|
Post by: WarnerConnelly3
直通式截止阀 J41H/W
J41H/W直通式截止阀,它依靠阀杆压力,使阀瓣密封面与阀座密封面紧密结合,阴止介质流通。在启闭过程中密封面之 […]
